Accurate Hugoniots and sound velocities of bismuth under shock compression in the 38-100 GPa range
Feng Xi,
Ke Jin,
Huayun Geng,
Yinghua Li,
Ye Tan,
Jun Li,
Yi Zhang,
Lin Zhang,
Lingcang Cai,
Yi Sun
Affiliations
Feng Xi
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Ke Jin
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Huayun Geng
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Yinghua Li
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Ye Tan
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Jun Li
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Yi Zhang
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Lin Zhang
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Lingcang Cai
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Yi Sun
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-102, Mianyang, Sichuan 621999, P. R. China
Dynamic compression experiments of bismuth (Bi) in a shock pressure range of 38-100 GPa were conducted using an explosive drive. The time-resolved particle velocity profiles at the Bi/LiF (lithium fluoride) interface and the impact velocities were recorded with a displacement interferometer system for any reflector (DISAR). Shock velocities of Bi were measured based on the shorted-pin technique. Sound velocities of Bi were obtained from the peak state time duration measurements with the overtake method. Uncertainties in the measured Hugoniots and sound velocities were analyzed carefully. The new Hugoniot relation, Us = (1.666 ± 0.057) km/s + (1.596 ± 0.037)Up (1.13 km/s ≤Up≤2.05 km/s), was determined by fitting the measured shock velocity and particle velocity to a line. The relation between the Grüneisen coefficient and the density, γρ=const., is found to be a good approximation to describe the sound velocities of Bi above the shock-induced melting pressure, by carefully analysis of the sound velocity data.
